Inclinometers FAQQWhat is zero point and zero point (offset, bias) error?

The sensor is at zero point, when it is mounted in the prescribed position (measuring direction) and no acceleration is acting on it. For horizontal inclinometers and accelerometers it is at 0g (with the defined face up) and for vertical accelerometers at 1g. Zero Point Error is the deviation of the output, when the device is in its zero position, compared with the optimum value.